[AT] [Bulk] Re: Hydraulic bottle jack issues

[Dave Rotigel]

Harbor Frieght has 12 ton bottle jacks for sale for $29.99. See: http://www.harborfreight.com/automotive-motorcycle/bottle-jacks.html And you can get a 20% off coupon on line any time you want!
	Dave

On Jan 21, 2015, at 9:51 PM, David Trompower wrote:

> ambient temp. is about 65 F. 
> the ideas of 'gunk '  in the system and clogged passages, and  stuck check valves  seem  fairly good to pursue, so I will try those.   Thank you all!
> it will be a couple days before I can post a progress report.  but meanwhile if other ideas come to mind please let me know. 
> 
> R. David 
> 
> 
>> Date: Wed, 21 Jan 2015 18:11:55 -0600
>> From: tmehrkam at sbcglobal.net
>> To: at at lists.antique-tractor.com
>> Subject: Re: [AT] [Bulk] Re:  Hydraulic bottle jack issues
>> 
>> How cold is it?
>> 
>> On 1/21/2015 7:03 AM, Stephen Offiler wrote:
>>> They all work pretty much the same.  Follow this link to a schematic
>>> diagram.  Seems that probably your "one-way valve" is gunked up or perhaps
>>> damaged from overtightening or something like that.
>>> 
>>> http://cnx.org/resources/f61c398d96d1af1f33c8bf77415a54ca/graphics5.png
>>> 
>>> SO
>>> 
>>> 
>>> On Wed, Jan 21, 2015 at 5:22 AM, Steve W. <swilliams268 at frontier.com> wrote:
>>> 
>>>> David Trompower wrote:
>>>>> need your thoughts and help with this. My  old Black jack  brand,
>>>>> hydraulic (bottle) hand jack, 12 ton model,   will  raise the ram,
>>>>> but not retract the ram.
>>>>> 
>>>>> 1) Opening the release valve does nothing. 2)  the weight of what I
>>>>> have raised with the jack  will not  push the ram back down? 3)  I
>>>>> can stand on it  and it will not retrack. 4)  if I hit  the ram  with
>>>>> a mallet it will slowly go down, .. an 1/8 of an inch  with each blow
>>>>> is all. 5)  Left over night with a load on the ram,  will not cause
>>>>> the ram to be retracted by morning. 6)  I opened the filler port
>>>>> expecting there is too much oil or excess trapped air.  but neither
>>>>> came out?
>>>>> 
>>>>> What is wrong? What  would you  recommend I do to fix this jack? I am
>>>>> stumped.
>>>>> 
>>>>> 
>>>>> R. David
>>>>> 
>>>>> 
>>>> Sounds like the release valve ball is stuck or the passage is blocked. I
>>>> would take it apart and refurbish it.
>>>> 
>>>> --
>>>> Steve W.
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